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Scientists Study Norovirus

Outbreaks of the Norwalk virus on cruise ships in recent weeks have brought the bug widespread publicity. The virus isn't new. Gastrointestinal illnesses caused by what's really a family of viruses have been diagnosed for 30 years. Scientists now are referring to the group of viruses as "Norovirus." NPR's Joanne Silberner reports.

Copyright 2003 NPR

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